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© The New York Public Library, 2026
The New York Public Library is a 501(c)(3) | EIN 13-1887440
New York World's Fair 1939 and 1940 Incorporated records, [microform]
Manuscripts and Archives Division, The New York Public Library. "United States Interior Dept. of Nat'l. Park Service Grand Canyon National Park, Grand Canyon, Arizona" The New York Public Library Digital Collections. 1935 - 1945. https://old-digitalcollections.nypl.org/items/b619bd9c-6d32-e6d9-e040-e00a1806748c
Manuscripts and Archives Division, The New York Public Library. "United States Interior Dept. of Nat'l. Park Service Grand Canyon National Park, Grand Canyon, Arizona" New York Public Library Digital Collections. Accessed October 4, 2026. https://old-digitalcollections.nypl.org/items/b619bd9c-6d32-e6d9-e040-e00a1806748c
Manuscripts and Archives Division, The New York Public Library. (1935 - 1945). United States Interior Dept. of Nat'l. Park Service Grand Canyon National Park, Grand Canyon, Arizona Retrieved from https://old-digitalcollections.nypl.org/items/b619bd9c-6d32-e6d9-e040-e00a1806748c
<ref name=NYPL>{{cite web | url=https://old-digitalcollections.nypl.org/items/b619bd9c-6d32-e6d9-e040-e00a1806748c | title=
(text)
United States Interior Dept. of Nat'l. Park Service Grand Canyon National Park, Grand Canyon, Arizona, (1935 - 1945)|author=Digital Collections, The New York Public Library |accessdate=October 4, 2026 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>